| Pornic to Orthez | 258.86 mi (416.59 km) |
| Pornic to Orvault | 25.02 mi (40.26 km) |
| Pornic to Osny | 234.47 mi (377.34 km) |
| Pornic to Ostwald | 465.65 mi (749.39 km) |
| Pornic to Ouistreham | 171.94 mi (276.71 km) |
| Pornic to Oullins | 343.03 mi (552.05 km) |
| Pornic to Outreau | 299.34 mi (481.74 km) |
| Pornic to Oyonnax | 372.36 mi (599.25 km) |
| Pornic to Ozoir-la-Ferriere | 249.33 mi (401.26 km) |
| Pornic to Pace | 72.95 mi (117.40 km) |
| Pornic to Palaiseau | 229.66 mi (369.59 km) |
| Pornic to Pamiers | 330.28 mi (531.54 km) |
| Pornic to Panazol | 184.79 mi (297.40 km) |
| Pornic to Pantin | 241.83 mi (389.19 km) |
| Pornic to Paray-le-Monial | 297.89 mi (479.40 km) |
